About Borides

Zirconium Boride

Borides are chemical compounds formed when boron bonds with a less electronegative element. Borides are all hard, high-melting-point materials with metal-like conductivity. They can be made by direct combination of the elements at high temperatures or, more usually, by high-temperature reduction of a mixture of the metal oxide and boron oxide using carbon or aluminium. Chemically, they are stable to non-oxidizing acids but are attacked by strong oxidizing agents and by strong alkalis. Borides can be classified loosely as boron-rich or metal-rich. The generally accepted definition is that if the ratio of boron atoms to metal atoms is 4:1 or more the compound is boron-rich, if it is less, then it is metal-rich.

Boron-rich boride properties vary from one compound to the next, and include examples of compounds that are semiconductors, superconductors, diamagnetic, paramagnetic, ferromagnetic or anti-ferromagnetic. They are mostly stable and refractory. One such compound, lanthanum boride (LaB6), is an inert refractory compound, used in hot cathodes because of its low work function for emission of electrodes.

Borides formed with transition metals tend to form metal-rich borides. Metal-rich borides are typically inert and have high melting temperatures. Investigations into these borides have revealed a wealth of interesting properties such as superconductivity at 39 K in magnesium diboride (MgB2) and the ultra-incompressibility of OsB2 and ReB2.

American Elements manufactures multiple forms of boride compounds including sputtering targets, nanopowders, submicron, and -325 mesh powders, and high surface area materials with particle distribution and particle size controlled and certified. We also produce larger -40 mesh, -100 mesh, -200 mesh range sizes and <0.5 mm, 2 mm, 5 mm and other sizes of shot, granules, lump, flake and pieces. Purities include 99%, 99.9%, 99.99%, 99.999% and 99.9999% (2N, 3N, 4N, 5N and 6N).

American Elements maintains industrial scale production for all its boride products and will execute Non-Disclosure or Confidentiality Agreements to protect customer know-how.

Recent Research & Development for Borides

Boron-Dependency of Molybdenum Boride Electrocatalysts for the Hydrogen Evolution Reaction., Park, Hyounmyung, Encinas Andrew, Scheifers Jan P., Zhang Yuemei, and Fokwa Boniface P. T. , Angew Chem Int Ed Engl, 2017 May 08, Volume 56, Issue 20, p.5575-5578, (2017)

Manganese mono-boride, an inexpensive room temperature ferromagnetic hard material., Ma, Shuailing, Bao Kuo, Tao Qiang, Zhu Pinwen, Ma Teng, Liu Bo, Liu Yazhou, and Cui Tian , Sci Rep, 2017 Mar 06, Volume 7, p.43759, (2017)

General Fabrication of Boride, Carbide, and Nitride Nanocrystals via a Metal-Hydrolysis-Assisted Process., Zhou, Ling, Yang Lishan, Shao Li, Chen Bo, Meng Fanhui, Qian Yitai, and Xu Liqiang , Inorg Chem, 2017 Mar 06, Volume 56, Issue 5, p.2440-2447, (2017)

Toxicogenomic responses of human alveolar epithelial cells to tungsten boride nanoparticles., Turkez, Hasan, Arslan Mehmet Enes, Sönmez Erdal, Tatar Abdulgani, Açikyildiz Metin, and Geyikoğlu Fatime , Chem Biol Interact, 2017 Jun 27, Volume 273, p.257-265, (2017)

The structure and hardness of the highest boride of tungsten, a borophene-based compound., Szwacki, Nevill Gonzalez , Sci Rep, 2017 Jun 22, Volume 7, Issue 1, p.4082, (2017)

Lanthanum hexaboride for solar energy applications., Sani, Elisa, Mercatelli Luca, Meucci Marco, Zoli Luca, and Sciti Diletta , Sci Rep, 2017 Apr 06, Volume 7, Issue 1, p.718, (2017)

Magnesium diboride coated bulk niobium: a new approach to higher acceleration gradient., Tan, Teng, Wolak M A., Xi X X., Tajima T, and Civale L , Sci Rep, 2016 Oct 24, Volume 6, p.35879, (2016)

Metal borohydride formation from aluminium boride and metal hydrides., Møller, Kasper T., Fogh Alexander S., Paskevicius Mark, Skibsted Jørgen, and Jensen Torben R. , Phys Chem Chem Phys, 2016 Oct 05, Volume 18, Issue 39, p.27545-27553, (2016)

Superhard Rhenium/Tungsten Diboride Solid Solutions., Lech, Andrew T., Turner Christopher L., Lei Jialin, Mohammadi Reza, Tolbert Sarah H., and Kaner Richard B. , J Am Chem Soc, 2016 Nov 2, Volume 138, Issue 43, p.14398-14408, (2016)

Synthesis and Characterization of an Alumina Forming Nanolaminated Boride: MoAlB., Kota, Sankalp, Zapata-Solvas Eugenio, Ly Alexander, Lu Jun, Elkassabany Omar, Huon Amanda, Lee William E., Hultman Lars, May Steve J., and Barsoum Michel W. , Sci Rep, 2016 May 25, Volume 6, p.26475, (2016)

Phase diagram and physical properties of iridium tetraboride from first principles., Li, Xiaofeng, Wang Haiyan, Lv Jian, and Liu Zhongli , Phys Chem Chem Phys, 2016 May 14, Volume 18, Issue 18, p.12569-75, (2016)

Valence fluctuations of europium in the boride Eu4Pd(29+x)B8., Gumeniuk, Roman, Schnelle Walter, Ahmida Mahmoud A., Abd-Elmeguid Mohsen M., Kvashnina Kristina O., Tsirlin Alexander A., Leithe-Jasper Andreas, and Geibel Christoph , J Phys Condens Matter, 2016 Mar 23, Volume 28, Issue 11, p.115601, (2016)

Structural prediction of ultrahard semi-titanium boride (Ti2B) using the frozen-phonon method., Zhou, Dan, Liu Yanhui, Shen Bingjun, Zhao Xinle, Xu Ying, and Tian Jian , Phys Chem Chem Phys, 2016 Mar 21, Volume 18, Issue 11, p.7927-31, (2016)

Ground state structures of tantalum tetraboride and triboride: an ab initio study., Wei, Shuli, Li Da, Lv Yunzhou, Liu Zhao, Xu Chunhong, Tian Fubo, Duan Defang, Liu Bingbing, and Cui Tian , Phys Chem Chem Phys, 2016 Jun 21, (2016)

Coexistence of Superconductivity and Superhardness in Beryllium Hexaboride Driven by Inherent Multicenter Bonding., Wu, Lailei, Wan Biao, Liu Hanyu, Gou Huiyang, Yao Yansun, Li Zhiping, Zhang Jingwu, Gao Faming, and Mao Ho-Kwang , J Phys Chem Lett, 2016 Dec 01, Volume 7, Issue 23, p.4898-4904, (2016)